There is no accurate guide to boat values. NADA is a tool so lenders don’t get burned by overlending, the prices are impossibly broad and don’t accurately reflect regional variations.
The best source is to get your own gut feeling by watching Craigslist and other classifieds. Specifically you are watching for the ads that disappear! Because that’s what is SELLING. Anybody can (and many do) post a piece of cr@p for top dollar, but the real value is determined by what sells.
If you post the year, model, and condition, we can most likely give you a fairly accurate range.
Grouse